Types of Electromagnetic Waves

Electromagnetic Waves

Electromagnetic waves are transverse waves. They transfer energy from a source to an absorber. Electromagnetic waves form a continuous spectrum (shown below). All electromagnetic waves in the spectrum travel at the same speed in a vacuum (e.g. in space) or air.

Different Electromagnetic Waves

The spectrum is shown below:

You need to remember the order in both wavelength and frequency.

Our eyes only detect visible light, which is a very small part of the spectrum.